linux-kernel - Re: [RFC PATCH v2 32/51] KVM: guest_memfd: Support guestmem

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Message-ID: <aJsFtq-vLmCWHT06@tlindgre-MOBL1>
Date: Tue, 12 Aug 2025 12:13:26 +0300
From: Tony Lindgren <tony.lindgren@...ux.intel.com>
To: Ackerley Tng <ackerleytng@...gle.com>
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Subject: Re: [RFC PATCH v2 32/51] KVM: guest_memfd: Support guestmem_hugetlb
 as custom allocator

Hi,

On Wed, May 14, 2025 at 04:42:11PM -0700, Ackerley Tng wrote:
> --- a/virt/kvm/Kconfig
> +++ b/virt/kvm/Kconfig
> @@ -133,3 +133,8 @@ config KVM_GMEM_SHARED_MEM
>         select KVM_GMEM
>         bool
>         prompt "Enables in-place shared memory for guest_memfd"
> +
> +config KVM_GMEM_HUGETLB
> +       select KVM_PRIVATE_MEM
> +       depends on GUESTMEM_HUGETLB
> +       bool "Enables using a custom allocator with guest_memfd, see CONFIG_GUESTMEM_HUGETLB"

For v3, this needs s/KVM_PRIVATE_MEM/KVM_GMEM/ assuming the patches are
based on "KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM".

Also probably good idea to run some make randconfig builds on the series to
check the various Kconfig changes and inline functions for build errors.

Regards,

Tony